User Manual

Page 52
ELR 9000 Series
www.elektroautomatik.de
[e-mail]
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
3.5 Alarms and monitoring
3.5.1 Denition of terms
There is a clear distinction between equipment alarms (see “3.2.5 Alarm conditions”) such as overvoltage or
overheating, and user dened events such as e.g OVD overvoltage monitoring. Whilst equipment alarms serve to
protect the equipment, initially switching off the DC input, user dened events can cut out the DC input (action =
ALARM) but can also simply give an acoustic signal to make the user aware. The actions driven by user dened
events can be selected:
Action Impact Example
NONE User dened event is disabled.
SIGNAL
On reaching the condition which triggers the event, the action SIGNAL will
show a text message in the status area of the display.
WARNING
On reaching the condition which triggers the event, the action WARNING
will show a text message in the status area of the display and pop up an
additional warning message.
ALARM
On reaching the condition which triggers the event, the action ALARM will
show a text message in the status area of the display with an additional alarm
pop-up, and additionally emit an acoustic signal (if activated). Furthermore
the DC input is switched off. Certain device alarms are also signalled to the
analog interface or can be queried via the digital interface.
3.5.2 Device alarm handling
A device alarm incident will usually lead to DC input switch-off, the appearance of a pop-up in the middle of the
display and, if activated, an acoustic signal to make the user aware. The alarm must always be acknowledged.
If the alarm condition no longer exists, e.g. the device has cooled down following overheating, the alarm indica-
tion will disappear. If the condition persists, the display remains and, following elimination of the cause, must be
acknowledged again.
► How to acknowledge an alarm in the display:
1. If the alarm is indicated as a pop-up, tap OK.
2. If the alarm has already been acknowledged, but is still displayed in the status area,
then rst tap the status area to make the alert pop up again and then acknowledge
with OK.
Some device alarms are congurable:
Alarm Meaning Description Range Indication
OVP
OverVoltage
Protection
Triggers an alarm if the DC input voltage exceeds the
dened threshold. The DC input will be switched off..
0V...1.1*U
Nom
Display, analog
IF, digital IF
OCP
OverCurrent
Protection
Triggers an alarm if the DC input current exceeds the
dened threshold. The DC input will be switched off..
0A....1.1*I
Nom
Display, digital
IF
OPP
OverPower
Protection
Triggers an alarm if the DC input power exceeds the
dened threshold, The DC input will be switched off..
0W...1.1*P
Nom
Display, digital
IF